From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B723DC4360C for ; Wed, 12 May 2021 08:12:37 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 32001613BE for ; Wed, 12 May 2021 08:12:37 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 32001613BE Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=ACULAB.COM Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 87C496B0036; Wed, 12 May 2021 04:12:36 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 82C836B006E; Wed, 12 May 2021 04:12:36 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 6A5D06B0070; Wed, 12 May 2021 04:12:36 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0213.hostedemail.com [216.40.44.213]) by kanga.kvack.org (Postfix) with ESMTP id 4C5AB6B0036 for ; Wed, 12 May 2021 04:12:36 -0400 (EDT) Received: from smtpin17.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 0054682499B9 for ; Wed, 12 May 2021 08:12:35 +0000 (UTC) X-FDA: 78131862312.17.0FC8E6C Received: from eu-smtp-delivery-151.mimecast.com (eu-smtp-delivery-151.mimecast.com [185.58.85.151]) by imf11.hostedemail.com (Postfix) with ESMTP id 511BC2000381 for ; Wed, 12 May 2021 08:12:16 +0000 (UTC) Received: from AcuMS.aculab.com (156.67.243.121 [156.67.243.121]) (Using TLS) by relay.mimecast.com with ESMTP id uk-mta-24-Mu4ZH7yROfqaElxRZepFWA-1; Wed, 12 May 2021 09:12:32 +0100 X-MC-Unique: Mu4ZH7yROfqaElxRZepFWA-1 Received: from AcuMS.Aculab.com (fd9f:af1c:a25b:0:994c:f5c2:35d6:9b65) by AcuMS.aculab.com (fd9f:af1c:a25b:0:994c:f5c2:35d6:9b65) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 12 May 2021 09:12:30 +0100 Received: from AcuMS.Aculab.com ([fe80::994c:f5c2:35d6:9b65]) by AcuMS.aculab.com ([fe80::994c:f5c2:35d6:9b65%12]) with mapi id 15.00.1497.015; Wed, 12 May 2021 09:12:30 +0100 From: David Laight To: 'Borislav Petkov' , "Yu, Yu-cheng" CC: "x86@kernel.org" , "H. Peter Anvin" , Thomas Gleixner , Ingo Molnar , "linux-kernel@vger.kernel.org" , "linux-doc@vger.kernel.org" , "linux-mm@kvack.org" , "linux-arch@vger.kernel.org" , "linux-api@vger.kernel.org" , Arnd Bergmann , Andy Lutomirski , Balbir Singh , Cyrill Gorcunov , Dave Hansen , "Eugene Syromiatnikov" , Florian Weimer , "H.J. Lu" , Jann Horn , Jonathan Corbet , Kees Cook , Mike Kravetz , Nadav Amit , Oleg Nesterov , Pavel Machek , Peter Zijlstra , Randy Dunlap , "Ravi V. Shankar" , Vedvyas Shanbhogue , Dave Martin , "Weijiang Yang" , Pengfei Xu , "Haitao Huang" Subject: RE: [PATCH v26 23/30] x86/cet/shstk: Handle thread shadow stack Thread-Topic: [PATCH v26 23/30] x86/cet/shstk: Handle thread shadow stack Thread-Index: AQHXRoh6HV4c4+Eb3km5gqBECdAPb6rff7ZQ Date: Wed, 12 May 2021 08:12:29 +0000 Message-ID: References: <20210427204315.24153-1-yu-cheng.yu@intel.com> <20210427204315.24153-24-yu-cheng.yu@intel.com> <89598d32-4bf8-b989-ee77-5b4b55a138a9@intel.com> In-Reply-To: Accept-Language: en-GB, en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.202.205.107] MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: aculab.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 Authentication-Results: imf11.hostedemail.com; dkim=none; dmarc=pass (policy=none) header.from=ACULAB.COM; spf=pass (imf11.hostedemail.com: domain of david.laight@aculab.com designates 185.58.85.151 as permitted sender) smtp.mailfrom=david.laight@aculab.com X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 511BC2000381 X-Stat-Signature: h4zqbcbayd3jxiknge7bsecpwsi3of93 Received-SPF: none (aculab.com>: No applicable sender policy available) receiver=imf11; identity=mailfrom; envelope-from=""; helo=eu-smtp-delivery-151.mimecast.com; client-ip=185.58.85.151 X-HE-DKIM-Result: none/none X-HE-Tag: 1620807136-885655 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: RnJvbTogQm9yaXNsYXYgUGV0a292DQo+IFNlbnQ6IDExIE1heSAyMDIxIDE4OjEwDQo+IA0KPiBP biBNb24sIE1heSAxMCwgMjAyMSBhdCAwMzo1Nzo1NlBNIC0wNzAwLCBZdSwgWXUtY2hlbmcgd3Jv dGU6DQo+ID4gU28gdGhpcyBzdHJ1Y3Qgd2lsbCBiZToNCj4gPg0KPiA+IHN0cnVjdCB0aHJlYWRf c2hzdGsgew0KPiA+IAl1NjQgc2hzdGtfYmFzZTsNCj4gPiAJdTY0IHNoc3RrX3NpemU7DQo+ID4g CXU2NCBsb2NrZWQ6MTsNCj4gPiAJdTY0IGlidDoxOw0KDQpObyBwb2ludCBpbiBiaXQgZmllbGRz Pw0KDQo+ID4gfTsNCj4gPg0KPiA+IE9rPw0KPiANCj4gUHJldHR5IG11Y2guDQo+IA0KPiBZb3Ug Y2FuIGV2ZW4gcmVtb3ZlIHRoZSAic2hzdGtfIiBmcm9tIHRoZSBtZW1iZXJzIGFuZCB3aGVuIHlv dSBjYWxsIHRoZQ0KPiBwb2ludGVyICJzaHN0ayIsIGFjY2Vzc2luZyB0aGUgbWVtYmVycyB3aWxs IHJlYWQNCj4gDQo+IAlzaHN0ay0+YmFzZQ0KPiAJc2hzdGstPnNpemUNCj4gCS4uLg0KPiANCj4g YW5kIGFsbCBpcyBvcmdhbmljIGFuZCByZWFkYWJsZSA6KQ0KDQpBbmQgZW50aXJlbHkgbm90IGdy ZXBwYWJsZS4NCg0KCURhdmlkDQoNCi0NClJlZ2lzdGVyZWQgQWRkcmVzcyBMYWtlc2lkZSwgQnJh bWxleSBSb2FkLCBNb3VudCBGYXJtLCBNaWx0b24gS2V5bmVzLCBNSzEgMVBULCBVSw0KUmVnaXN0 cmF0aW9uIE5vOiAxMzk3Mzg2IChXYWxlcykNCg==